1378141221250 has 20 divisors (see below), whose sum is σ = 2583187907454. Its totient is φ = 551256488000.

The previous prime is 1378141221199. The next prime is 1378141221283. The reversal of 1378141221250 is 521221418731.

It can be written as a sum of positive squares in 5 ways, for example, as 81305389881 + 1296835831369 = 285141^2 + 1138787^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 551255239 + ... + 551257738.

Almost surely, 2^{1378141221250} is an apocalyptic number.

1378141221250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1378141221250 is a deficient number, since it is larger than the sum of its proper divisors (1205046686204).

1378141221250 is an equidigital number, since it uses as much as digits as its factorization.

1378141221250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1102512999 (or 1102512984 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 37.

Adding to 1378141221250 its reverse (521221418731), we get a palindrome (1899362639981).

The spelling of 1378141221250 in words is "one trillion, three hundred seventy-eight billion, one hundred forty-one million, two hundred twenty-one thousand, two hundred fifty".